/Engine/Source/Runtime/Engine/Classes/Materials/MaterialInterface.h
Return insight on what (e.g. texture coordinates, vertex data, etc) is used in the shader graph compiled by a callback
void AnalyzeMaterialCompilationInCallback ( [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void([FMaterialCompiler](API\Runtime\Engine\FMaterialCompiler) *)> InCompilationCallback, [FMaterialAnalysisResult](API\Runtime\Engine\Materials\FMaterialAnalysisResult) & OutResult )